Grabbing Pavement Reply #45 – March 19, 2010, 12:10:22 PM Quote from: 32VFoxBird;314919the 7.5" will last awhile with a stock motor and tires. It's when you're putting 300 hp to the wheels with stick tires, you'll break it. But only a few here aremaking that kind of power and drag racing on a track.Ummmm I make MORE......Like I said, spider gears..... Quote Selected
Grabbing Pavement Reply #46 – March 19, 2010, 12:12:09 PM A posi will help protect the spider gears. Full locker is not a good option for a street car and illegal for the track unless you upgrade to eliminate you c-clips.I guess that I was not saying that the 7.5 is complete junk (maybe very weak went too far). What I was trying to say is that I would not want to put any money into a 7.5 when you can buy a fairly cheap 8.8 and not have to worry about it in the future.I have an 8.8 in my Cadillac 500 powered T-bird running 11.45 and with a slight lift on take off and so far so good. I do not think that a 7.5 would survive one run. My upgrades are a truck posi, 31 spline axles and aftermarket rear cover.There is a reason that Ford use the 8.8 in the Turbo Coupe and Mustang 5.0When I was a kid I had a 1966 Dodge Dart. I spent money on the stock, small, weak V-8 rear only to have it break twice. Once I upgraded to a 8.75 mopar I had zero problem and saved a lot of money. Just trying to pass on my experience. First thing I always do with a new hot rod is make sure the rear can handle the power. I have seen many broken rears at the drags (mostly GM). It is very embarrassing to hear a clunk and not move at the starting line and you sure don't want to do it next to a Honda on the street.TED Quote Selected
Grabbing Pavement Reply #47 – March 19, 2010, 12:51:14 PM Quote from: V8Demon;314932Ummmm I make MORE......Like I said, spider gears.....you seem to have a reading comprehension problem. Quote Selected
Grabbing Pavement Reply #48 – March 19, 2010, 04:05:55 PM Quote from: 32VFoxBird;314938you seem to have a reading comprehension problem.On your period?PMed.There are examples of 7.5 rears in the 10's..... These are fully built of course, but even one with mild upgrades can stand quite a bit of abuse contrary to generalizations presented preceding this post.Been a while since I put a name on the ignore list.....guess I'll go do that now.... Quote Selected
Grabbing Pavement Reply #49 – March 19, 2010, 04:47:32 PM I was only backing up your statement about them. I know they can handle somr power, but if you're making any real power you should just get an 8.8". why build a 7.5" when an 8.8" can handle it? I never said a 7.5" couldn't be built to handle 10 sec slips. You're putting words int mouth. Quote Selected
Grabbing Pavement Reply #50 – March 19, 2010, 05:14:34 PM I always see axles brake, 7.5 or 8.8. It's not always pretty either. Quote Selected
Grabbing Pavement Reply #51 – March 23, 2010, 09:44:54 PM my built 7.5 rear end with 3:73 gears has handled all the abuse of a v6 nitrous motor and hasn't messed up yet. Quote Selected
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